Marvel released a teaser for Avengers: Doomsday recently, announcing that the film was in production. It opened to a slow crawl of numerous chairs, all against the backdrop of a gradually building superhero theme. Disney was probably counting on it being an epic, thrilling hint at things to come. But was this the starting gun Kevin Feige was hoping for? Marvel is certainly pulling out all the stops to help forget the pitfalls of recent years.